I think an important figure of merit to consider when evaluating an intercooler is its efficiency, which seems to be missing from list of data for each model intercooler. Efficiency, as a percentage, is defined as:
TIN - TOUT
_________ x 100
TIN - TAMB
TAMB is ambient air temperature,
TIN is the temperature of air entering the intercooler,
TOUT is the temperature of air exiting the intercooler.
So, an intercooler whose efficiency is 80% removes 80% of the heat added by the turbocharger and would generally be preferred over an intercooler whose efficiency is 75%.